- client-go: The `rest.AnonymousClientConfig(*rest.Config) *rest.Config` helper method no longer copies custom `Transport` and `WrapTransport` fields, because those can be used to inject user credentials. ([#75771](https://github.com/kubernetes/kubernetes/pull/75771), [@liggitt](https://github.com/liggitt))...

    - [**Security**](#security)
      - [Admission Control](#admission-control)
      - [TLS Bootstrapping](#tls-bootstrapping)
      - [Audit Logging](#audit-logging)
      - [Encryption at Rest](#encryption-at-rest)
      - [Node Authorization](#node-authorization)
    - [**Application Autoscaling**](#application-autoscaling)
      - [Horizontal Pod Autoscaler](#horizontal-pod-autoscaler)

- Kubeadm: prevent potential hanging of commands such as "kubeadm reset" if the apiserver endpoint is not reachable. ([#84648](https://github.com/kubernetes/kubernetes/pull/84648), [@neolit123](https://github.com/neolit123))

- Removed local etcd members from the etcd cluster when `kubeadm reset` ([#74112](https://github.com/kubernetes/kubernetes/pull/74112), [@pytimer](https://github.com/pytimer))

* Azure cloudprovider: Fix controller manager crash issue on a manually created k8s cluster. ([#53694](https://github.com/kubernetes/kubernetes/pull/53694), [@andyzhangx](https://github.com/andyzhangx))
* Fix kubelet reset liveness probe failure count across pod restart boundaries. ([#46371](https://github.com/kubernetes/kubernetes/pull/46371), [@sjenning](https://github.com/sjenning))



# v1.6.11

- `kubeadm join --experimental-control-plane` now automatically adds a new etcd member for `local etcd` mode, further simplifying required tasks for HA clusters setup.
- Improvements were made to `kubeadm reset` related to cleaning  etcd and notifying the user about the state of iptables.
- kubeadm commands now print warnings if input YAML documents contain unknown or duplicate fields.

#### kube-controller-manager:
- Azure service annotation service.beta.kubernetes.io/azure-load-balancer-disable-tcp-reset has been deprecated. Its support would be removed in a future release. ([#88462](https://github.com/kubernetes/kubernetes/pull/88462), [@feiskyer](https://github.com/feiskyer)) [SIG Cloud Provider]

#### kubelet:

   - In version 1.8, enable this behavior by setting the
     `--horizontal-pod-autoscaler-use-rest-clients` flag to `true`.

   - In version 1.9, this behavior will be enabled by default, and must be explicitly
     disabled by setting the `--horizontal-pod-autoscaler-use-rest-clients` flag to `false`.

### Cluster Lifecycle

* kubeadm: reset: use crictl to reset containers ([#54721](https://github.com/kubernetes/kubernetes/pull/54721), [@runcom](https://github.com/runcom))

  // record of Assigned config is updated. If the Assigned config is Active at the end
  // of this period, it becomes the LastKnownGood. Note that if Spec.ConfigSource is
  // reset to nil (use local defaults), the LastKnownGood is also immediately reset to nil,
  // because the local default config is always assumed good.
  // You should not make assumptions about the node's method of determining config stability